Sprocket Warranty

Dirt Tricks Sprocket Warranty:
All Ironman Sprockets are designed to meet the highest quality and design standards and are guaranteed for 1-year against defects in materials, craftsmanship and excessive wear.

The sprocket will be replaced free of charge, at our sole discretion if any of the following conditions exist: Within 12 months of purchase, any cracking caused during motorcycle operation for which the motorcycle was intended. Any excessive wear: If within 12 months of purchase, the original tooth profile is worn at any point beyond .025" (0.6mm) from its original profile on the majority of teeth. This guarantee does not cover sprockets that have cracking or breakage as a result of insufficient chain slack, cracked and/or missing chain rollers or loose, missing or improperly tightened sprocket bolts or that are damaged from a crash, misuse, abuse or lack of care.
Original Sales receipt must accompany all claims for consideration. Sprockets considered for guarantee claims will be replaced with same model and size of original. Dirt Tricks warrants original Ironman products only and does not cover damage to any other part on the bike that may occur. Ironman Sprockets are intended for off road use only.

Dirt Tricks-Ironman Sprockets are warranted for 12 months from the date of purchase.
The sprocket must be returned to:
Dirt Tricks, Attn: Warranty Dept., 1132-A Airport Rd., Minden, NV 89423

Here is what a worn sprocket looks like. This sprocket is just at the .025" wear limit. This sprocket has been run for over 1000 hours of offroad use, five O-ring chains and 31 Dunlop 695 rear tires. As a sprocket wears the roller slowly eats into the driven side of the tooth. In the picture, the wear is on the left side of the valley, whereas the right side is the original profile. Look for an unsymmetrical tooth form when viewing the profile. Disregard any pattern created by chain lube or side links on the face.

At Dirt Tricks we are committed to making the best quality, longest lasting products period! Part of the process is listening to your feedback and ideas. Our Ironman Sprocket is one of those legendary products, which has proven itself under the harshest riding and racing environments on the planet. With its lightweight design along with its durability to outlast anything else, how can it be improved?

We have been listening to your feedback for the last 5 years. We would like to say thank you very much for the thousands of very positive comments. We have noted comments by registration card, phone, e-mail, in person, and on the internet. One very false myth we have heard is, “Those Ironman Sprockets will break your hub.” This myth is propagated by comments such as: “No inner ring causes too much stress on the hub” or “It is too weak to handle the torque load.”

In reality, our Ironman Sprocket properly bolted to an intact hub, can handle a load in excess of 8000 pounds of chain tension. This is far greater than the stress your chain can handle before failure. Most chains fail at about 7200 pounds of tension. An inner sprocket ring is unnecessary because the load is carried by the sprocket/hub bolted assembly. Hub failure will only occur under the following conditions:

2. A pre-existing crack in your hub, (usually caused from prior sprocket bolt issues may also be a weak casting). We have observed Yamaha, Kawasaki and Honda hubs with voids and/or foreign materials in the cast aluminum.

3. An “ovaling” of the hub tang bolt holes (also caused from prior sprocket bolt issues) reducing material cross-section of the hub tang.

4. Mechanic error, (adjusting the chain to tight). With a tight chain, over 14,000 pounds of load can be applied to a sprocket and directed to the hub - 7000 pounds from both the top and bottom chains. This incredible load will not cause our sprocket to fail, but will cause a catastrophic failure of the hub. When this occurs while riding, everything – hub, chain, sprocket, gets wadded up after the hub failure.

For riders who have problems keeping sprocket bolts tight, we have extended you a bit of insurance. We have made the decision to add a “strut” into our sprocket design. This strut connects the bolt holes by a solid ray of steel. In the event that you are one of the very few people who have a bolt or hub failure, this will help save your hub. The stress applied to the sprocket where the bolt is missing will be transferred to the bolts on either side. This may give you the time you need to pull over and fix it without hub damage. We have been successful in making this improvement without adding additional weight to the sprocket.

The original design is tried and true and shall continue to be sold until supplies are exhausted. We want to make it very clear that there is absolutely nothing wrong with this design. We have simply made a change that may help some you who have bolt issues. We shall change sprockets over to the Generation II design as they sell out. This process may take several years for some of the slow moving part numbers.

For installation of any new sprocket you should clean your hub surfaces of all grease and grime. You should inspect for any cracks, excessive wear and loose spokes.

You should use brand new high quality sprocket bolts and red grade thread locker such as Loc-tite, when installing a new sprocket. Always follow torque specifications from your owner’s manual. Recommended torque on sprocket nuts is generally 30 Ft-Pounds (40 (N-M). Thread locker needs time to cure, please read label for curing times. Mark the nuts with a felt marker or “Torque Seal” so that if any movement occurs, it will be visually apparent. If you find loose nuts, don’t tighten them! The Loc-tite bond has broken. Disassemble, clean, and re-apply red Loc-tite and torque the nut. Remove your old marks and re-mark the nut/hub interface. You should always do a pre-ride bike inspection. Part of that inspection should be to always check your sprocket bolts. Thanks for your Dirt Tricks purchase, our sprockets will last you a very, very long time. Now get out there and go riding! Please read sprocket Instructions for further helpful information.